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Methods of Treating A Bacterial Infection using F. Tularensis Lipopolysaccharide

Inactive Publication Date: 2007-02-22
UNIV OF MARYLAND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0010] The present invention relates to the ability of Francisella tularensis lipopolysaccharide (LPS) to confer protection in a subject against a subsequent bacterial infection. Accordingly, the invention provides methods of treating and preventing bacterial infection in a subject by administering F. tularensis LPS to the subject. In one aspect, the methods relate to treating and preventing

Problems solved by technology

Infection with Ft also results in a pronounced inflammatory response.

Method used

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  • Methods of Treating A Bacterial Infection using F. Tularensis Lipopolysaccharide
  • Methods of Treating A Bacterial Infection using F. Tularensis Lipopolysaccharide
  • Methods of Treating A Bacterial Infection using F. Tularensis Lipopolysaccharide

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[0061] Subjects and Reagents

[0062] Five to 6-wk-old C57BL / 6J mice were purchased from the Jackson Laboratory (Bar Harbor, Me.). Mice were injected i.p. with purified Ft LVS LPS or inoculated i.p. or i.d. with Ft LVS bacteria. At the indicated times after inoculation, mice were sacrificed and livers, lungs, spleen, and blood were collected. Organs were snap frozen in an ethanol / dry ice bath and then stored at −80° C. for subsequent RNA extraction. Serum samples were collected and stored at −80° C. Serum cytokine concentrations were determined using ELISA assays or the Luminex® 100™ Total System (Luminex Corporation, Austin, Tex.) by the Cytokine Core Facility (Univ. of Maryland, Baltimore).

[0063] Peritoneal macrophages were isolated from mice 4 days after i.p. injection of sterile 3% thioglycollate as described previously in Salkowski, C. A., et al., J. Immunol. 163:1529-1536 (1999). Briefly, cells were washed in sterile 1×PBS and then resuspended in RPMI 1640 (Invitrogen, Carlsbad...

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Abstract

The present invention relates to the ability of Francisella tularensis LVS lipopolysaccharide (LPS) to confer protection in a subject against a subsequent bacterial infection. Accordingly, the invention provides methods of treating and preventing bacterial infection in a subject by administering F. tularensis LPS to the subject. The invention also relates to methods of modulating the immune response in a subject comprising administering F. tularensis LPS to the subject.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority to U.S. Provisional Application Ser. No. 60 / 687,449, Jun. 6, 2005, which is incorporated by reference in its entirety.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] Part of the work performed during development of this invention utilized U.S. Government funds from NIH grant number AI057168. The U.S. Government has certain rights in this invention.BACKGROUND OF THE INVENTION [0003] 1. Field of the Invention [0004] The present invention relates to the ability of Francisella tularensis lipopolysaccharide (LPS) to confer protection in a subject against a subsequent bacterial infection. Accordingly, the invention provides methods of treating and preventing bacterial infection in a subject by administering F. tularensis LPS to the subject. The invention also relates to methods of modulating the immune response in a subject comprising administering F. tularensis LPS to the subject. [0005...

Claims

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Application Information

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IPC IPC(8): A61K39/02A61K31/739
CPCA61K31/739
Inventor VOGEL, STEFANIECOLE, LEAH E.
Owner UNIV OF MARYLAND
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